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newton 1
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Oct 2, 2012 8:00am PDT
law. glass pushes water. how hard? the same. just as hard as if it were--huh? let's try this. okay, one more time. see, the vase like that. this water is pushing down against the side, but the side is pushing back up against the water. how hard? just as if you had all the water right here. so it turns out it really does only depend on the depth. let's see what happens with something like this. narrower, narrower tube. [laughter] and there we have it, gang. and we see what? [laughter] exactly the same pressure. isn't that neat? isn't that neat? you like, huh? mmm. huh, huh? doesn't physics always work? [laughter] yeah. all right. you get the idea. hey, but, you know, this is kind of strange, that a little narrow tube like that can exert just as much pressure on the bottom as a wide one. how can we explain that, gang? let's look at the--this time we have a tube like this. okay? how can the pressure down at the bottom here be just the same as if it were all filled with water? it behaves the same, doesn't it? but there's no water here. it turns out that water pressure acts in all direc
Search Results 0 to 0 of about 1